How much work is done by a crane that lowers 1000N of material a distance of 150

Answers

Answer 1

Answer: The crane does NO work.

Work = (force) x (distance)

= (1,000 N) x (150 meters ?) = 150,000 joules

But the work is in the direction of the force, and it isn't the crane
pushing the material down. It's gravity.

Gravity is doing the work.

If the material was being lowered by a cable wrapped around the shaft
of an electric generator, then you could use the work done by gravity to
generate some electrical energy, and then sell the energy.

Or, if the "material" happened to be water, you could let gravity lower it
through a turbine or a water wheel, and use the work done by gravity to
grind wheat.

Yes, the crane may be raising a sweat, working against gravity. The
purpose is only to prevent gravityfrom doing the work too fast.

Answer 2

Answer: Since workdone isForce times distanceGiven force-1000nDistance-150Wd-1000 times 150Wd-150000n.

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Which principle of training type overload time reversibility?

Answers

Answer:

The principle of training that is related to overload and time reversibility is the principle of Specificity.

What are the requirements for an inertial frame of reference?

Answers

As simply put as I believe is possible, it's the immediate space-time co-oridinate in which the observer is not in motion. All measurements by the observer are in relation to that 'place'

The function of a capacitor in an electric circuit is to?A. measure the amount of current in the circuit.
B. increase circuit power
.C. allow current flow between its plates.
D. store electric charges.

Answers

Well let's see:

A). No. A capacitor doesn't measure anything.

B). No. The power delivered to the circuit is determined by
      the battery or power supply and all the things in
the circuit that dissipate energy. A capacitor doesn't
do any of these things.

C). No. If any current actually flows between its plates,
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   must be replaced.

D). Yes. A capacitor stores charges on its plates, and
electrical energy in the field between its plates.

Answer:

D. Stores electric charges

Lien uses a spring scale to pull a block toward the right across the lab table. The scale reads 8 N. Which force should Lien conclude is also 8 N?

Answers

Answer

The force on the left across the lab table.

Explanation

The Newton's third law of motion states that; action and reaction are equal but a ct in opposite direction.

When the block of is pulled on the right with a force of X Newtons then there is a force -X Newtons applying and equal force on the left. For every action there must be a reaction with is equal and applying in the opposite direction.

So, if the block is pulled on the right by a force of 8 N there is another equal force applying on the left.

The force to the left of the block on the spring scale

pyrex graduated cylinder has a volume of exactly 200 ml at 0° celsius. if it's temperature increased to 100° celsius what's volume increase or decrease compute the change in volume ?

Answers

1. The volume will increase.

2. The change in the volume is 73 mL

1. Determination of the nature of the new volume.

From the question given above, the following data were obtained:

Initial volume (V₁) = 200 mL

Initial temperature (T₁) = 0 °C = 0 + 273 = 273 K

New temperature (T₂) = 100 °C = 100 + 273 = 373 K

New volume (V₂) =?

Using the Charles' law equation, the new volume of the cylinder can be obtained as follow:

V₁ / T₁ = V₂ / T₂

200 / 273 = V₂ / 373

Cross multiply

273 × V₂ = 200 × 373

273 × V₂ = 74600

Divide both side by 273

V₂ = 74600 / 273

V₂ ≈ 273 mL

From the above calculation, we can see that the new volume increased.

2. Determination of the change in the volume.

The change in the volume can be obtained as illustrated below:

Initial volume (V₁) = 200 mL

New volume (V₂) = 273 mL

Change in volume (ΔV) =?

ΔV = V₂ – V₁

ΔV = 273 – 200

ΔV = 73 mL

Learn more about Charles' law:

brainly.com/question/16927784

Scientific Inquiry incorporates many scientific methods.
A) true
B) false

Answers

True fhfhhj ufg ffgh fdh fhgg f jc fg gt

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